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joelpimentel
05.05.2020 •
Mathematics
Rhianna has 12 assignments left to complete for online learning this week. 5 of them are for statistics, 4 of them are for earth & space science, and the rest of them are for economics.
What is the probability none of her next three assignments will be for statistics
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Ответ:
1/22
Step-by-step explanation:
let me know if i got this wrong, but the events are dependent, so the equation is (5/12)(4/11)(3/10)= 1/22.
Since there are 5 statistic and 12 total, that's obviously the first fraction. Then you take one from each because both sides are getting smaller (less statistic assignments and less total assignments.)
I did just learn this, but let me know if I was wrong please.
Ответ: